Mathematics for the elementary school. Teachers' commentary

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110 2 ‡aSchool Mathematics Study Group.
245 1 0 ‡aMathematics for the elementary school. ‡bTeachers' commentary. ‡cPrepared under the supervision of the Panel on Elementary School Mathematics: Leslie Beatty [and others]
250 ‡aPrelim. ed.
260 ‡a[Stanford, Calif., ‡cc1963-
300 ‡av. in ‡billus.
538 ‡aMode of access: Internet.
650 0 ‡aMathematics ‡xStudy and teaching (Primary)
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